qcacld-3.0: Fix rmmod for runtime pm

Runtime PM should be turned off before the driver is unloaded.

Change-Id: I8746e92931375893708556e77a3d93bfd6266668
CRs-Fixed: 935300
diff --git a/core/hdd/src/wlan_hdd_driver_ops.c b/core/hdd/src/wlan_hdd_driver_ops.c
index ada5569..77ebe6a 100644
--- a/core/hdd/src/wlan_hdd_driver_ops.c
+++ b/core/hdd/src/wlan_hdd_driver_ops.c
@@ -314,6 +314,7 @@
 
 	hif_ctx = cds_get_context(CDF_MODULE_ID_HIF);
 
+	hif_disable_power_management(hif_ctx);
 	hif_pktlogmod_exit(hif_ctx);
 
 	if (WLAN_IS_EPPING_ENABLED(cds_get_conparam())) {